Register

He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the…

He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the…
46.1k views
0 votes
He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the exam right?

PLEASE HURRYYYY AND HELPPPPPPPP

User Jacob Raccuia
by
7.3k points

1 Answer

3 votes

Answer: he must answer 21 questions

Step-by-step explanation: 0.70 * 120 = 84

84 - 63 = 21

User Johan Donne
by
8.0k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!